OpenMM

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OpenMMMicro Machines, reimplemented

A faithful reimplementation of Micro Machines (Codemasters, 1994) for DOS, in C11, ported function by function from the original program. It will run the game from your own floppy, as one WebAssembly module for the gasm runtime, natively and in the browser. Groundwork: the program is read and unpacked; the game does not run yet.

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Two toy Formula One cars racing across a pool table between pool balls, playing cards and a cube of chalk, under the OpenMM wordmark

Faithful

Not an emulator and not a remake. The goal is the original's behaviour, its handling, its computer drivers and its quirks, ported from the hand-written assembly of MICRO.EXE and checked against it in an x86 emulator.

Your own data

Reads your floppy, its disk image or the installed game. Even the tables inside the original program are read from your copy at run time. Nothing from the game is in OpenMM.

Game data

Runs on gasm

One openmm.wasm for macOS, Linux, Windows and the browser on the gasm WebAssembly game runtime, drawing the original's 320 x 200 VGA screen at 4:3.

Status

Part of ENCORE — Engines of Nostalgia, Clean Open REimplementations. OpenMM is released under the GPL-3.0. Micro Machines is © 1994 Codemasters. OpenMM contains no original code or assets and is not affiliated with Codemasters: it runs the game from your own copy. It runs on gasm. Credits